hi allthis one looks like just a study at this stage in...

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Mickem

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19/07/20

13:32

Post #: 45964049
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Originally posted by BobF: ↑

I will happily attempt to redirect you if you are happy to be corrected. Trees are made out of CO2+H2O > Sugars > Cellulose > Wood. This is the entirely benign carbon cycle that has been in operation for billions of years. In Nature CO2 and O2 and H2O are both abundant and all participate in an endless cycle into and out of living material. But the relative concentrations of all are self-regulated by Nature depending on the climate. If there is an excess of CO2 that traps too much solar heat Nature generally allows there to be a boom time of the growth of trees and sea shells etc, i.e. everywhere becomes tropical. The shells lock CO2-carbon up in the form of mineral carbonates (CaCO3) that get buried. The trees lock up carbon as hydrocarbons that get buried as "fossil" fuels. These processes take many millions of years to balance the books, but that is OK because the earth does not generally see massive sudden changes in CO2 levels unless there is an asteroid impact that screws pretty much everything, or a vast period of volcanism that does the same (i.e. the kind of volcanism that created the Indian sub continent).

Our problem is that we are liberating the fossil carbon and forrest carbon as CO2 straight back into the atmosphere way faster than Nature can rebalance the system via these slow natural processes. The result is an excess of CO2 and this traps solar heat. This raises the global average temperature and this climate change is what is going to screw us all.

CO2 is a greenhouse gas that has a long lifetime in the atmosphere. It traps solar heat by not allowing it to be re-radiated back into space. Methane is an even more potent greenhouse gas but it breaks down to CO2 after a few decades in the atmosphere. That is why agricultural emissions of methane are far more worrisome than CO2 for many years after they are emitted. Once it breaks down to CO2 it is just as worrisome.

How do we stop this? There is only one way without invoking forces that we could never deploy or master, and that is to stop cutting down forests and urgently replant them, stop grazing animals that belch methane, and stop burning fossil fuels, period.

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hi all
this one looks like just a study at this stage in Portland, but USA does seem to be generating some interest

http://www.fbodaily.com/archive/2020/07-July/18-Jul-2020/FBO-05723179.htm

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